Liquid infusion apparatus
US6575936B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 27, 2000 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Feb 14, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/6018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A liquid infusion apparatus for fixing an outer cylinder of a syringe and a driver for pushing a plunger in a predetermined direction so as to exhaust liquid in the syringe, an incremental linear encoder arranged along the feeding axis of said driver for pushing the plunger, a detector of said incremental linear encoder mounted on a slider portion of the driver for pushing the plunger so as to generate a signal indicating a moving quantity of the plunger, and a sensor provided in the vicinity of a liquid exhaust port of the outer cylinder for setting along the feeding axis a remaining liquid quantity small section so as to generate a signal about a position of the plunger at the remaining liquid quantity small section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.